even though under aged drinking is against the law. that leads to a dilemma. what would you do if you saw an adult buying alcohol for a teenager? the legal drinking age is 21 in this country. john quinones asks that question in an episode of "what would you do?" >> as fathers and mothers, we try to be the cool mom or dad because we want our kids and their friends to like us. but how much is too much? what if you see that cool dad in a liquor store, stocking up for the kids' house party? we wanted to find out what people will do if they see one of these dads in action, buying alcohol for his underaged child. >> you're going to fit right in. we need vodka. >> we don't need vodka, dad. i don't want to go overboard. >> grab a little soda, too. >> reporter: this woman enters the store and immediately takes notice of father and son. and it doesn't take long for blanche to react. >> you can't buy that. that's underaged drinking. you cannot buy it. >> it's going to be at my house. >> you'll be the one arrested. you can't sell this to him. you know it's wrong. you can'